Lee Dong-joon

Lee Taek-yeol

Um Sun-gu

Woodsman

Kwon Ji-woong

Choi Dong Joon [Ro Hee's great-uncle]

Yoo Gyo-yeon

Ji-eun's father

No Yu Cheol

Designer Lee [Hyun Joo's father]

Lee Young Goon [Professor]

Yun Taek Il [Seung Beom and Sun Ho's dad]

Kang Joo-man

Park Hyeong Su [Jing Seong's father]

Oh Sang Gun

Jong Soo [Jin Soo's father]

Chairman Baek

Jong Soo

[Young Geum and Ham Duk's father]

Joo Man-Yong

Yoo Nam-soo

[Hunter]

Yun Sang-gi

Kim Jin Sung [Prime Minister candidate]